Hypertext Help with LaTeX

\linebreak

\linebreak[number]

The \linebreak command tells LaTeX to break the current line at the
point of the command. With the optional argument, number, you can
convert the \linebreak command from a demand to a request. The number
must be a number from 0 to 4. The higher the number, the more
insistent the request is.

The \linebreak command causes LaTeX to stretch the line so it extends
to the right margin.